Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Device for detecting failure in piezoelectric apparatus










Image Number 10 for United States Patent #5376854.

A drive circuit for driving a piezoelectric element includes a transformer having a primary winding connected to a power source and a secondary winding connected to the piezoelectric element, a primary semiconductor element circuit connected to the primary winding for switching the current through the primary winding, and a secondary semiconductor element circuit connected to the secondary winding for switching the current through the secondary winding. A failure detection unit responsive to the potential at a predetermined point of the drive circuit is provided for detecting a failure in the piezoelectric apparatus and outputting a failure detection signal.








 
 
  Recently Added Patents
Embedded bonding pad for image sensors
Image forming apparatus
Polymer-encapsulated colorant nanoparticles
Method and device for generating low-jitter clock
Concentrating photovoltaic system module with actuator control
Electronic multiparty accounts receivable and accounts payable system
Method of manufacturing toner
  Randomly Featured Patents
Method of making EEPROM cell structure
Sensitivity disc dispenser with tamper mechanism
Swing diffuser
Waterborne craft
Semiconductor device with a surrounded channel transistor
Off-axis anti-reflective intraocular lenses
Semiconductor memory device for dynamically storing data with channel body of transistor used as storage node
Contoured resilient vehicle trim panel
Multilayered coplanar waveguide filter unit and method of manufacturing the same
Semi-conductive electrical heating device with voids